Niras Song Pope (2002)

Description:

Bua's life is a wreck: her family was broken, dad went bankrupt, mom went crazy, ex cheated on her, and she became an alcoholic. One day she rans into a lake while her ex was shooting at her, and somehow travels back in time to when the Burmese–Siamese War was happening. She falls in love with Tian, an average soldier, and helps changing history.